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NYC Building Code

§ 1705.14.4.1 — § 1705.14.4.1

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What is NYC BC § 1705.14.4.1?

Quick Answer

This section establishes the minimum allowable thickness for sprayed fire-resistant materials based on design thicknesses. For thicknesses of 1 inch or greater, the minimum is the design thickness minus 1/4 inch. For thicknesses less than 1 inch, it is the design thickness minus 25 percent. Applies to building owners involved in fire safety compliance.

General informational summary. Not legal advice for your situation. Consult an attorney before acting on any specific matter.

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1705.14.4.1 Minimum allowable thickness.

BC § 1705.14.4.1

For design thicknesses 1 inch (25.4 mm) or greater, the minimum allowable individual thickness shall be the design thickness minus 1/4 inch (6.4 mm). For design thicknesses less than 1 inch (25.4 mm), the minimum allowable individual thickness shall be the design thickness minus 25 percent. Thickness shall be determined in accordance with ASTM E 605. Samples of the sprayed fire-resistant materials shall be selected in accordance with Sections 1705.14.4.2 through 1705.14.4.9 of this code.

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